An essential prerequisite
必要条件
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
prerequisite
['pri:'rekwizit]
n. 先决条件，前提，必要条件;
adj. 必须先具备的，必要的;先决条件的;
🗣️ 情景例句
Your buildings are very large, aren't they?
你们的厂房很大，对吗？
When rogues (or thieves) fall out, honest men come by their own.
盗贼一内哄，好人就自在。
The aeroplane is flying over the river.
飞机正从河上飞过。